Prune finished labels from SSL3_ENC_METHOD.

There's not much point in putting those in the interface as the
final_finished_mac implementation is itself different between SSL 3.0
and TLS.

Change-Id: I76528a88d255c451ae008f1a34e51c3cb57d3073
Reviewed-on: https://boringssl-review.googlesource.com/6838
Reviewed-by: Adam Langley <alangley@gmail.com>
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index 2c1a32f..80c1b10 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -421,9 +421,7 @@
       case SSL3_ST_CW_FINISHED_A:
       case SSL3_ST_CW_FINISHED_B:
         ret = ssl3_send_finished(ssl, SSL3_ST_CW_FINISHED_A,
-                                 SSL3_ST_CW_FINISHED_B,
-                                 ssl->enc_method->client_finished_label,
-                                 ssl->enc_method->client_finished_label_len);
+                                 SSL3_ST_CW_FINISHED_B);
         if (ret <= 0) {
           goto end;
         }